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Renesas ISL6264CRZ-T
- Part No.:
- ISL6264CRZ-T
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
ISL6264CRZ-T.pdf
- Description:
- IC REG CTRL TWO-PHASE 1OUT 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,283
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Product details
Overview
ISL6264CRZ-T from Renesas (formerly Intersil) is a two-phase buck core voltage controller with integrated 2A gate drivers, designed specifically for AMD Mobile Turion CPUs. It delivers up to 50A output current, supports 6-bit VID input (0.375V–1.55V), achieves ±0.5% system accuracy over temperature in active mode, and implements R3 Technology™ for ultra-fast transient response. It operates across -10°C to +100°C ambient and uses QFN-40 (6×6 mm) packaging.
For engineers reviewing the ISL6264CRZ-T datasheet, ISL6264CRZ-T pinout, ISL6264CRZ-T application, or ISL6264CRZ-T equivalent, this page provides verified technical context, confirmed pin functions, real-world efficiency curves (2-phase CCM / 1-phase diode emulation), differential remote sensing capability, and validated alternative options for AMD CPU power delivery designs.
Technical Context
The ISL6264CRZ-T employs R3 Technology™-a proprietary Robust Ripple Regulator modulator that synthesizes noise-free ripple current analogs and uses hysteretic comparators to determine PWM pulse widths. This enables lower output ripple and reduced phase jitter versus fixed-frequency PWM or conventional hysteretic controllers.
It supports dynamic phase adding/dropping via PSI_L control, enabling seamless transition between two-phase continuous conduction mode (CCM) at heavy load and single-phase diode emulation (DE) mode at light load. Current sensing is implemented via either lossless DCR or precision resistor methods, with NTC thermistor compensation for DCR drift.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage Range | 0.375V to 1.55V via 6-bit VID; enables precise core voltage scaling per AMD mobile CPU specifications |
| System Accuracy | ±0.5% over temperature (−10°C to +100°C) in active mode; ensures stable CPU operation under thermal stress |
| Switching Frequency | 200–500 kHz adjustable via RFSET resistor; balances efficiency, size, and EMI in laptop VRMs |
| Gate Drive Capability | 2A source/sink per UGATE/LGATE; drives high-side and low-side MOSFETs directly without external buffers |
| Operating Temperature | −10°C to +100°C ambient; qualified for mobile computing thermal envelopes |
| Package | 40-pin QFN, 6×6 mm, exposed thermal pad; enables high-power density and efficient heat dissipation |
| Protection Features | Overvoltage (155–235 mV trip), undervoltage (−300 to −200 mV), overcurrent, and PGOOD monitoring; ensures robust CPU power integrity |
Pinout & Package
ISL6264CRZ-T is housed in a 40-lead QFN package (6×6 mm, 0.5 mm pitch) with an exposed thermal pad on the bottom for enhanced thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VID0–VID5 | 6-bit digital voltage identification input | Directly sets output voltage per AMD VID table; LSB = VID0, MSB = VID5 |
| PSI_L | Deep-sleep mode enable signal | Logic-low assertion triggers automatic transition from 2-phase CCM to 1-phase DE mode |
| VR_ON | Controller enable input | High-level logic (>2.3V) activates regulation; initiates soft-start sequence |
| UGATE1/UGATE2 | Upper gate drive outputs | Drive high-side MOSFET gates with 2A peak current; bootstrapped from BOOT1/BOOT2 |
| LGATE1/LGATE2 | Lower gate drive outputs | Drive low-side MOSFET gates with 4A sink capability; critical for synchronous rectification |
| VSEN/RTN | Differential remote sense inputs | Enable accurate die-level voltage regulation by measuring CPU core voltage directly |
| ISEN1/ISEN2 | Per-phase current sense inputs | Support DCR or resistor-based current sensing; feed into static/dynamic current balancing circuit |
| PGOOD | Open-drain power-good indicator | Signals valid output voltage after 7.6 ms delay; requires external pull-up to VCCP or 3.3V |
Key Features
| Feature | Design Value |
|---|---|
| R3 Technology™ Modulator | Combines fixed-frequency stability with hysteretic speed; enables <10 µs load transient recovery while maintaining low output ripple |
| Dual-Mode Operation | Automatically switches between 2-phase CCM (high load) and 1-phase diode emulation (light load) to maximize efficiency across full load range |
| Differential Remote Sensing | VSEN/RTN interface compensates for PCB IR drop; maintains ±0.5% regulation accuracy at CPU die under dynamic load |
| DCR Thermal Compensation | Single NTC network corrects copper winding resistance drift; preserves load-line accuracy over −10°C to +100°C |
| Configurable Soft-Start | SOFT pin capacitor sets slew rate (e.g., 47 nF → 0.9 mV/s start-up); prevents inrush current and overshoot during power-on |
Applications
| AMD Mobile CPU Power Delivery | Laptop VRM Core Regulation |
|---|---|
Use Scenario: Powering AMD Turion 64 X2 and compatible mobile processors in thin-and-light notebooks. IC Role / Device Role / Timing Role: Two-phase core controller managing up to 50A output with dynamic VID adjustment and PSI_L-driven phase shedding. Use Value: Enables compliant voltage positioning, fast load transients (<10 µs), and >90% efficiency at 20A with 12.6V input per published curves. |
Use Scenario: Primary core voltage regulator in OEM laptop motherboards requiring RoHS-compliant, space-constrained VRMs. IC Role / Device Role / Timing Role: Integrated gate driver + controller eliminates discrete driver ICs; reduces BOM count and layout area by ~30% vs. controller-only solutions. Use Value: QFN-40 package with thermal pad supports 2.5 W dissipation; allows compact 2-layer PCB design without heatsinks. |
| Mobile Platform Battery Life Extension | Thermally Adaptive CPU Voltage Control |
Use Scenario: Optimizing energy efficiency during idle and light-load states in battery-powered systems. IC Role / Device Role / Timing Role: Enters 1-phase diode emulation mode when PSI_L is asserted, reducing switching losses and extending runtime. Use Value: Achieves >85% efficiency at 2A load (Figure 6), compared to <75% in forced 2-phase CCM - measurable battery life gain. |
Use Scenario: Maintaining precise core voltage under varying junction temperatures in fanless or thermally constrained designs. IC Role / Device Role / Timing Role: Uses NTC-compensated DCR sensing and ±0.5% system accuracy to sustain load line compliance from −10°C to +100°C. Use Value: Eliminates need for external temperature sensors or calibration; ensures stable CPU frequency scaling across thermal zones. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar two-phase CPU core controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL6268CRZ-T | Same R3 Technology™ architecture but supports Intel Mobile Pentium M/Core Duo VID tables; different VID mapping and PSI_L timing behavior | Designed for Intel platforms; not AMD VID-compatible; requires VID table reconfiguration and BIOS update | Select only for Intel-based designs; not drop-in for AMD Turion systems |
| RT8802AGQW | Two-phase controller with integrated drivers; supports 0.3–1.5V output but lacks differential remote sensing and NTC DCR compensation | Targeted at cost-sensitive consumer notebooks; requires external sense resistors and has ±1.0% system accuracy | Acceptable for non-critical AMD platforms where die-level accuracy is relaxed; verify load-line compliance separately |
Compared with ISL6264CRZ-T, ISL6268CRZ-T offers identical performance but Intel-specific VID logic, while RT8802AGQW trades remote sensing and thermal compensation for lower cost-making ISL6264CRZ-T the only option meeting AMD Turion's full specification for accuracy, transient response, and thermal adaptability.
Availability
ISL6264CRZ-T is available at Aetrix Electronics and suitable for AMD mobile CPU power delivery, laptop VRM design, and thermally adaptive core regulation requiring stable component supply across industrial temperature ranges and long-lifecycle production programs.
Supply support for ISL6264CRZ-T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Renesas Electronics acquired Intersil in 2017 and maintains full support for its high-performance analog and power management portfolio, including legacy CPU VRM controllers.
The ISL6264CRZ-T belongs to Intersil's R3 Technology™ core controller family, engineered specifically for AMD mobile processor power requirements-emphasizing fast transient response, multi-mode efficiency optimization, and die-level voltage accuracy.
FAQ
What is the operating temperature range for the ISL6264CRZ-T?
The ISL6264CRZ-T is rated for −10°C to +100°C ambient temperature operation, with junction temperature limits up to +125°C. This range aligns with mobile computing thermal environments and is validated per FN6359 Rev 3.00 specifications. The device maintains ±0.5% system accuracy across this full range in active mode, making ISL6264CRZ-T suitable for fanless or thermally constrained laptop designs.
Does the ISL6264CRZ-T support differential remote voltage sensing?
Yes, the ISL6264CRZ-T provides dedicated VSEN and RTN pins for differential remote sensing, enabling direct measurement of CPU die voltage. This feature compensates for PCB trace resistance and ensures ±0.5% regulation accuracy at the load point-not just at the VRM output. Verified in Figure 1 and functional description on page 6 of FN6359, this capability is essential for compliance with AMD Mobile Turion voltage specifications.
How does the ISL6264CRZ-T handle phase shedding and mode transitions?
The ISL6264CRZ-T uses the PSI_L signal to initiate smooth transitions between two-phase CCM and one-phase diode emulation (DE) modes. When PSI_L is asserted low, it disables one phase while maintaining current sharing and load-line integrity. Mode transitions are managed by internal R3 Technology™ algorithms that preserve synthesized ripple continuity-verified in Figures 24–27 of FN6359. No external sequencing is required for ISL6264CRZ-T.
What current sensing methods does the ISL6264CRZ-T support?
The ISL6264CRZ-T supports both lossless inductor DCR sensing and precision resistor sensing, with dedicated ISEN1 and ISEN2 inputs for per-phase monitoring. For DCR sensing, a single NTC thermistor network compensates copper resistance drift across temperature-detailed in Figure 2 and Theory of Operation (page 15). Resistor sensing is implemented as shown in Figure 3, using matched sense resistors for each phase.
Is the ISL6264CRZ-T RoHS compliant and lead-free?
Yes, the ISL6264CRZ-T is Pb-free and RoHS compliant, using 100% matte tin (e3) termination finish and RoHS-compliant molding compounds. Its reflow profile meets IPC/JEDEC J-STD-020 requirements for lead-free soldering, and thermal data (θJA = 32°C/W, θJC = 4°C/W) is specified for the Pb-free QFN package-confirmed in the Absolute Maximum Ratings section (page 2) of FN6359.
ISL6264CRZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- Robust Ripple Regulator™ (R3)
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- Controller, AMD Mobile Turion™
- Voltage - Input:
- 5V ~ 24V
- Number of Outputs:
- 1
- Voltage - Output:
- 0.38V ~ 1.55V
- Operating Temperature:
- -10°C ~ 100°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-QFN (6x6)
ISL6264CRZ-T FAQ
1.How can I place an order for ISL6264CRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6264CRZ-T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for ISL6264CRZ-T reliable?
The price and inventory of ISL6264CRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6264CRZ-T is usually 5 days.
3.What payment methods are accepted for ISL6264CRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6264CRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6264CRZ-T?
ISL6264CRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6264CRZ-T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for ISL6264CRZ-T?
For technical support, including ISL6264CRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6264CRZ-T requirements.
6.How does Aetrix verify that ISL6264CRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL6264CRZ-T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ISL6264CRZ-T meets industry standards.
7.What is the process for return or replacement of ISL6264CRZ-T?
All ISL6264CRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL6264CRZ-T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The ISL6264CRZ-T part is unused and in its original packaging.
Return procedure for ISL6264CRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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